Gaya APA

Yahrif, M., Dahniar, . (2021). The art of english: for university students (cet.1). Yogyakarta: pustaka ilmu.

Gaya MLA

Yahrif, Muhammad., Dahniar, . "The art of english: for university students". cet.1 Yogyakarta: pustaka ilmu, 2021. Text.